Valves and valve actuation – Tube compressors – Fluid pressure actuated
Reexamination Certificate
2006-07-17
2010-02-23
Fristoe, Jr., John K (Department: 3753)
Valves and valve actuation
Tube compressors
Fluid pressure actuated
C251S004000
Reexamination Certificate
active
07665713
ABSTRACT:
A sleeve valve includes a rigid mandrel with a plurality of openings and a generally cylindrical elastomeric sleeve that surrounds the mandrel. A generally cylindrical rigid sleeve valve housing surrounds the elastomeric sleeve and defines a control chamber between the elastomeric sleeve and the sleeve valve housing. A pilot valve is mounted to the sleeve valve housing for supplying pressurized liquid to, and venting pressurized liquid from, the control chamber through a first passage formed in the sleeve valve housing. A filter screens debris from pressurized liquid entering an inlet end of the sleeve valve housing before it enters a second passage that communicates with the pilot valve.
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Marketing Brochure for 800 Series Control Valves by Nelson, Nov. 1995 CP 5M (4 pages).
Fristoe, Jr. John K
Hunter Industries, Inc.
Jester Michael H.
Tietjen Marina
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